3M FT-31 Sensitivity Solution, Bitter3M Sensitivity Solution, Bitter (MFR # FT-31) from 3M. For Use With: For 3M Qualitative Fit Test Apparatus FT-30. Sold 6 per sell unit; sold by CS / EA.Key Features The bitter sensitivity solution helps in checking that there's a safe respiratory seal It's used with the 3M FT-30 Fit Test Apparatus to ensure the respirator meets OSHA standards This solution uses denatonium benzoate to produce a bitter taste It allows organizations to meet regulatory fit-testing requirements for respirators This 3M sensitivity solution works with a nebulizer and collar to test the fit of dust masks and respirators Specifications Brand: 3M Manufacturer Part #: FT-31 McKesson Item #: 352740 SKU: 352740_CS (CS) / 352740_EA (EA) Product Type: Masks Application: Bitter Sensitivity Solution, Bitter For Use With: For 3M Qualitative Fit Test Apparatus FT-30 Latex Free Indicator: Not Made with Natural Rubber Latex Packaging: 6 per sell unit; sold by CS / EA